Update README

* Update README

fix typos, add $copyText example from sample2, close #28

README.md

@@ -63,20 +63,63 @@ new Vue({
 
 ## I want to copy texts without a specific button!
 
-Yes, you can do it by using our new method: `this.$copyText`. see [sample2](sample2.html).
+Yes, you can do it by using our new method: `this.$copyText`. See [sample2](sample2.html), where we replace the clipboard directives with a v-on directive.
 
-Modern browser have some limiation like that you can't use `window.open` without a user iteraction.
-So there's a same restriction on copy things! Test it before you use it. Make sure you are not
+## Sample 2
+
+```html
+<div id="app"></div>
+
+  <template id="t">
+    <div class="container">
+    <input type="text" v-model="message">
+    <button type="button" @click="doCopy">Copy!</button>
+    </div>
+  </template>
+
+  <script>
+  new Vue({
+    el: '#app',
+    template: '#t',
+    data: function () {
+      return {
+        message: 'Copy These Text'
+      }
+    },
+    methods: {
+      doCopy: function () {
+        this.$copyText(this.message).then(function (e) {
+          alert('Copied')
+          console.log(e)
+        }, function (e) {
+          alert('Can not copy')
+          console.log(e)
+        })
+      }
+    }
+  })
+  </script>
+
+```
+
+You can use [your Vue instance ```vm.$el```](https://vuejs.org/v2/api/#vm-el) to get DOM elements via the usual traversal methods, e.g.:
+
+```this.$el.children[1].children[2].textContent```
+
+This will allow you to access the *rendered* content of your components, rather than the components themselves.
+
+Modern browsers have some limitations like that you can't use `window.open` without a user interaction.
+So there's the same restriction on copying things! Test it before you use it. Make sure you are not
 using this method inside any async method.
 
-Before using this feature, reading
+Before using this feature, read:
 [this issue](https://github.com/zenorocha/clipboard.js/issues/218) and
 [this page](https://github.com/zenorocha/clipboard.js/wiki/Known-Limitations) first.
 
 ### Contribution
 
-PRs welcome, and issues aswell! If you want any feature that we don't have currently,
-please fire a issue for feature request.
+PRs welcome, and issues as well! If you want any feature that we don't have currently,
+please fire an issue for a feature request.
 
 ### License